Q2 2026 13F · SEC CIK 52234

Winmill & Co. Inc

Investment managerFiled 2026-08-13 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $451.7M
Reported positions: 56
Top holdings a year, 3 yrs: +28.8%
Average holding period: 4.0 yrs

Winmill & Co. Inc is an investment manager that reported 56 positions worth $451.7M in its Q2 2026 13F, filed 2026-08-13. Its largest holdings were Lam Research Corp (LRCX, 10.5%), Steel Dynamics Inc (STLD, 8.6%), Alphabet Inc (GOOGL, 8.6%). A portfolio copying its top holdings returned 28.8% a year over the last 3 years, against 20.4% for the S&P 500.

Winmill & Co. Inc holdings largest 50 of 56 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Winmill & Co. Inc 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
LRCXLam Research Corp	10.5%	6.7%	109,000	+0.0%	$47.2M
STLDSteel Dynamics Inc	8.6%	8.8%	168,747	+0.0%	$38.7M
GOOGLAlphabet Inc	8.6%	9.0%	108,100	+0.0%	$38.6M
IBKRInteractive Brokers Group in	6.3%	6.3%	327,200	+0.0%	$28.5M
WSMWilliams Sonoma Inc	5.7%	5.9%	111,000	-0.9%	$25.9M
MLIMueller Industries, Inc.	4.6%	5.4%	169,280	+0.0%	$20.8M
IAGIamgold Corp	4.2%	6.5%	1,190,000	+0.0%	$18.8M
URIUnited Rentals Inc	3.9%	3.2%	15,409	+0.0%	$17.5M
PGRProgressive Corp	3.9%	3.7%	79,765	+24.6%	$17.4M
NMIHNmi Hldgs Inc	3.6%	4.3%	396,095	+0.0%	$16.3M
YOUClear Secure Inc	3.6%	4.0%	289,135	+0.0%	$16.1M
MSFTMicrosoft Corp	3.3%	—	39,775	—	$14.8M
ESNTEssent Group Ltd Com	3.1%	3.6%	214,500	+0.0%	$13.8M
LPLALpl Finl Hldgs Inc	2.9%	4.0%	46,500	+0.0%	$13.1M
QLYSQualys Inc	2.7%	2.2%	88,641	+0.0%	$12.2M
DDSDillards Inc	2.5%	3.6%	21,538	+0.0%	$11.4M
67079U306Nutex Health Inc	2.5%	1.8%	65,350	+0.0%	$11.2M
AMPAmeriprise Finl Inc	2.2%	—	21,990	—	$10.1M
DUOLDuolingo Inc	2.2%	—	86,552	—	$10.0M
WTMWhite Mtns Ins Group Ltd	2.2%	—	4,800	—	$10.0M
NVRNvr Inc	1.6%	2.0%	1,062	+0.0%	$7.2M
GDDYGodaddy Inc	1.5%	—	82,200	—	$7.0M
ALRMAlarm Com Hldgs Inc	1.3%	1.6%	126,100	+0.0%	$5.9M
UNHUnitedhealth Group Inc	1.2%	1.1%	13,500	+0.0%	$5.6M
MAMastercard Incorporated	1.1%	1.4%	10,000	+0.0%	$5.1M
SELFGlobal Self Storage Inc	0.7%	0.9%	586,500	+0.0%	$3.1M
SSRMSsr Mng Inc	0.6%	0.8%	95,000	+0.0%	$2.7M
JPMJpmorgan Chase & Co	0.5%	0.6%	6,800	+0.0%	$2.2M
AUGOAura Minerals Inc	0.5%	0.8%	35,000	+0.0%	$2.2M
WPMWheaton Precious Metals Corp	0.4%	0.6%	16,700	+0.0%	$1.9M
BTGB2gold Corp	0.4%	0.6%	475,000	+0.0%	$1.8M
MUXMcewen Inc	0.4%	0.6%	97,500	+0.0%	$1.8M
RGLDRoyal Gold Inc	0.4%	0.6%	8,400	+0.0%	$1.7M
KGCKinross Gold Corp	0.4%	0.6%	68,500	+0.0%	$1.6M
EXRExtra Space Storage Inc	0.3%	0.4%	10,027	+0.0%	$1.5M
BRK-BBerkshire Hathaway Inc Del	0.3%	0.3%	2,500	+0.0%	$1.3M
GLDSpdr Gold Tr	0.3%	0.4%	3,290	+0.0%	$1.2M
MAXMediaalpha Inc	0.2%	—	65,102	—	$818K
SLVIshares Silver Tr	0.2%	0.3%	15,070	+0.0%	$806K
EVEREverQuote, Inc.	0.2%	0.1%	32,400	+0.0%	$771K
METAMeta Platforms Inc	0.1%	0.2%	1,150	+0.0%	$648K
NRDSNerdWallet, Inc.	0.1%	—	70,000	—	$648K
CUBECubesmart	0.1%	0.1%	14,000	+0.0%	$557K
PSAPublic Storage	0.1%	0.1%	1,700	+0.0%	$541K
BBWBuild-A-Bear Workshop Inc	0.1%	0.2%	16,500	+0.0%	$505K
GOOGAlphabet Inc	0.0%	0.0%	574	+0.0%	$205K
MXEMexico Equity & Income Fd	0.0%	0.0%	6,000	+0.0%	$78K
SPESpecial Opportunities Fd Inc Com	0.0%	0.0%	2,093	+0.0%	$28K
BRWSaba Capital Income & Oprnt Fd Shs New	0.0%	0.0%	3,700	+0.0%	$24K
SWZTotal Return Securities Fund	0.0%	0.0%	2,250	+0.0%	$13K

What Winmill & Co. Inc bought and sold in Q2 2026, against Q1 2026.

New positions

Q1 2026's filing was too long to tell new positions apart.

Added to

PGR Progressive Corp+24.6% shares

Reduced

No position shrank by more than 5%.

Left the top 50

HCA Hca Healthcare Incwas 3.6%
AEM Agnico Eagle Mines Ltdwas 0.9%
ELV Elevance Health Inc Formerlywas 0.8%
NEM Newmont Corpwas 0.6%
TFPM Triple Flag Precious Metalwas 0.5%
SPE-PC Special Opportunities Fd Incwas 0.0%
PCF High Income Securities Fundwas 0.0%

Share counts compared with the Q1 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +43.7% /yr; S&P 500 +20.1%
3 years: +28.8% /yr; S&P 500 +20.4%
5 years: +16.6% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$451.7M	56
Q1 2026	$346.6M	54
Q4 2025	$374.9M	56
Q3 2025	$412.4M	55
Q2 2025	$359.6M	55
Q1 2025	$329.0M	57
Q4 2024	$309.0M	55
Q3 2024	$297.2M	54
Q2 2024	$293.2M	58
Q1 2024	$351.3M	64
Q4 2023	$311.9M	68
Q3 2023	$273.0M	69

Questions about Winmill & Co. Inc's portfolio

What stocks does Winmill & Co. Inc own?

Winmill & Co. Inc's latest 13F, for Q2 2026 and filed Aug 13, 2026, lists 56 positions worth $451.7M. The largest are Lam Research Corp (LRCX) at 10.5%, Steel Dynamics Inc (STLD) at 8.6%, Alphabet Inc (GOOGL) at 8.6%, Interactive Brokers Group in (IBKR) at 6.3% and Williams Sonoma Inc (WSM) at 5.7%.

What did Winmill & Co. Inc buy last quarter?

In Q2 2026, Winmill & Co. Inc added Progressive Corp (PGR) (+24.6% shares), compared with its Q1 2026 filing.

What did Winmill & Co. Inc sell last quarter?

In Q2 2026, Winmill & Co. Inc cut from its top 50 Hca Healthcare Inc (HCA), cut from its top 50 Agnico Eagle Mines Ltd (AEM), cut from its top 50 Elevance Health Inc Formerly (ELV), cut from its top 50 Newmont Corp (NEM) and cut from its top 50 Triple Flag Precious Metal (TFPM), compared with its Q1 2026 filing.

How has Winmill & Co. Inc's portfolio performed?

A portfolio copying Winmill & Co. Inc's 20 largest 13F holdings each quarter, from the day each filing was public, returned +28.8% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +43.7% against +20.1%. Over 5 years: +16.6% a year against +11.6%.

When is Winmill & Co. Inc's next 13F filing due?

13F filings are due 45 days after each quarter ends. Winmill & Co. Inc's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.